HydroBASINS lev08 watershed · #2080631910
Bassin de Río Jarama
A watershed (drainage basin) is not a body of water — it is the land area where rainfall converges towards a single river that eventually reaches the sea (or an endorheic basin). Boundaries follow ridgelines.
Crosses 1 administrative regions : Madrid
Sub-basin area
35,5km²
Upstream area
2 461,5km²
Discharge
11,61m³/s
Mean elev.
643m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Río Jarama482 km²
- Bassin de Río Guadalix343 km²
1 dept-equivalent regions (GADM L2)
- 35.5 km²100.0% of basin
4 intersecting protected areas
Cuencas de los ríos Jarama y Henares
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
7.20 km² overlap
Estepas cerealistas de los ríos Jarama y Henares
IUCN Not ReportedSpecial Protection Area (Birds Directive)
5.72 km² overlap
Regional Park
2.28 km² overlap
Cuenca del río Manzanares
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
2.28 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
676 distinct species · 10 100 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 42 species (selected proportionally per kingdom among those with at least one documented interaction here) to keep the graph readable. Hover for details, click to explore the full ecosystem of a species.
ℹ️ The territory contains many more species than displayed and all their documented interactions: the graph is intentionally the structural skeleton (top-N species by composite local score, edges filtered by Serrano 2009 disparity filter α=0.2).
Indicateurs du tissu écologique
Tissu écologique de Bassin de Río Jarama : 32 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 90 interactions GloBI sur 5 types (connectance 10.0%, filtre Serrano α=0.2). 11 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
13,6°C
Annual rain
438mm
Moisture idx (CMI)
-0,60
Runoff
140mm/an
PET
1 088mm
AET
375mm
Mean slope
1,9°
Water table
327cm
Forest
4%
Crops
43%
Urban
68%
Protected
6%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)